package com.ycuwq.datepicker.interpolator;

/**
 * Anticipate overshoot interpolator
 */
public class AnticipateOvershootInterpolator extends BaseInterpolator {
    /**
     * M tension
     */
    private final float mTension;

    /**
     * Anticipate overshoot interpolator
     */
    public AnticipateOvershootInterpolator() {
        mTension = 2.0f * 1.5f;
    }

    /**
     * Anticipate overshoot interpolator
     *
     * @param tension tension
     */
    public AnticipateOvershootInterpolator(float tension) {
        mTension = tension * 1.5f;
    }

    /**
     * Anticipate overshoot interpolator
     *
     * @param tension      tension
     * @param extraTension extra tension
     */
    public AnticipateOvershootInterpolator(float tension, float extraTension) {
        mTension = tension * extraTension;
    }


    /**
     * A float
     *
     * @param valueT valueT
     * @param valueS valueS
     * @return the float
     */
    private static float methodA(float valueT, float valueS) {
        return valueT * valueT * ((valueS + 1) * valueT - valueS);
    }

    /**
     * O float
     *
     * @param ValueT ValueT
     * @param valueS valueS
     * @return the float
     */
    private static float methodO(float ValueT, float valueS) {
        return ValueT * ValueT * ((valueS + 1) * ValueT + valueS);
    }

    /**
     * Get interpolation float
     *
     * @param input input
     * @return the float
     */
    public float getInterpolation(float input) {
        if (input < 0.5f) {
            return 0.5f * methodA(input * 2.0f, mTension);
        } else {
            return 0.5f * (methodO(input * 2.0f - 2.0f, mTension) + 2.0f);
        }
    }


}

